buying vitz 2005 help needed now urgently

assalam u alaikum. m thru a deal of a vitz car cannt upload the pics here bt lemme tell the condition.. minor scratches are there on the back side, 1000cc converted to 1300cc AT, no cng, the car has a vibration when driven above 80kmph, didnt push it across 100, acceleration is smooth, has DVD in it, offwhite colour, 2007 registered, asking price is 800K, should is go for it??? what shud b a good deal?? its peshawar registered... plz help me as m going to finalize the deal tomorrow

thanx alta appreciated that answer will surely get the car checked due to that vibrating problm m in bit of hesitation as well bt getting it around 750k after bargaining isnt a bad deal though... ur reply did help me will check it tomorrow inshallah.. off to sleep now